Investors

SAS Investors
SASI was formed to facilitate the creation and growth of early-stage technology companies in the Mid-Atlantic and Northeast regions of the U.S. Located in New York City and backed by Canaan Partners, Rho Capital Partners, and Sevin Rosen Funds, three of the largest and most prominent venture capital firms in the U.S. SASI is one of the region's leading backers and builders of core technology companies.

Solstice Capital
Located in the Boston high-tech region that is home to Protonex, Solstice Capital seeks superior venture capital returns for its limited partners through investments in early-stage companies in the industry areas of alternative energy, education, the environment, life sciences, and information technology. Solstice Capital focuses their investments on committed and experienced management as well as on sustainable competitive advantages based on change factors.

Commons Capital
The objective of Commons is to realize competitive returns by investing in promising young companies whose products, services, and corporate cultures promote a sustainable economy and deliver market solutions to major social and environmental problems. The partners at Commons Capital believe that business can be a powerful force for good in the world and that early-stage companies-due to their creativity, flexibility, and energy- have a unique capacity to generate positive solutions. Commons Capital is affiliated with Investors' Circle, a national network of 120 high-net-worth individuals and venture funds.

Parker Hannifin Corporation
With annual sales exceeding $7 billion, Parker Hannifin (NYSE: PH) is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of commercial, mobile, industrial, and aerospace markets. The company employs more than 48,000 people in 46 countries around the world.

Contango Capital Management
Contango Capital Management invests in early-stage service and technology-based companies in the energy field. Its initial fund, Contango Capital Partners focuses on the development of fuel cells for private and governmental customers. Contango Capital Management, based in Houston, pursues both short-term and long-term opportunities arising from the significant changes taking place in the energy industry. The firm brings capital to innovative entrepreneurs who are working to answer the energy challenges facing the world today and tomorrow.

Massachusetts Green Energy Fund
The Massachusetts Green Energy Fund is a private venture capital fund investing in Massachusetts-based renewable and clean energy companies with the potential for strong venture capital returns. This fund invests in a broad range of emerging power-generation technologies, including photovoltaics, fuel cells, hydrogen storage, hydrogen generation, wind, wave, tidal, biomass, biodiesel, power control, power conditioning, engine design, and energy management and storage technologies. The Massachusetts Technology Corporation, a quasi-governmental body promoting clean energy and innovation, is an investor in the Massachusetts Green Energy Fund.

Venture Capital Fund of New England
The Venture Capital Fund of New England (VCFNE) was organized in 1981 to provide equity capital and management assistance to emerging growth-oriented companies in the areas of industrial and information technology and direct marketing programs. With over 100 collective years of venture capital investing in early stage companies, VCFNE's team has a long and distinguished track record of success.

Yellowstone Energy Ventures, L.P.
Yellowstone Energy Ventures, L.P. is a venture fund managed by the Yellowstone Group, a Houston, Texas-based, LBO and Venture Capital investment firm. Yellowstone is focused on the Energy, Life Science and Food Industries. Yellowstone's flexibility and size allow it to make decisions and structure transactions quickly and efficiently, creating value for shareholders, investors, and management teams.